Hoist



H. F. PARKER ET AL April 3, 1945 Filed Dec. 23, 1942 3 Sheets-Sheet lVINVENTORS a @W. M R 6 M Mm 2 P0 ,JY fma ww April 3, 1945. H. F. PARKERET AL 2,373,943

HOIST Filed Dec. 23, 1942 3 Sheets-Sheet 2 April 1945. H. F. PARKER ETAL 2,373,048

HOIST 3 Sheets-Sheet 3 Filed Dec. 23, 1942 5 5 mm H mz vN W 4 mm M 6 mmmm U Hm Patented Apr. 3, 1 945 HOIST Humphrey F. Parker, Kenmore, N. Y.,and Karl W.

Stinson, Columbus, Ohio, assignors to Columbus McKinnon ChainCorporation, Tonawanda,

V N. Y., a corporation of New York Application December 23, 1942, SerialNo. 469,882 1 Claim. C l. 254-4 69) Our invention relates in general tohoists and in particular to hand hoists of the type having the body partmade of spaced plates between which the load wheel is supported.

The objection to hoists of this type of the'p-resent-day design is thatthe spaced plates of the body part must be made separable and securedtogether by detachable means in order to assemble and disassemble thehoist parts, particularly the load wheel and shaft, with the result thatpermanent rigidity of the body parts is difficult to achieve.

The principal object of our invention has been to overcome thedisadvantages 'of the presentday design and to provide a hoist of thistype with body parts which are permanently fastened together, preferablyby welding, whereby the parts will permanently remain fixed and-rigid.

A further object has been to provide oneof the spaced body parts with anaperture large enough portions whereby body spacing shoulders are pro-:35

vided. i

Furthermore, the spacing studs of our invention are extended beyond thefaceo-f one of the body parts to form spaced supports for the bearingspider of our device.

The above objects and advantages have been accomplished. by the deviceshown in the accompanying drawings of which: I

Fig. 1 is a side elevational view of our device with the hand wheelremoved;

Fig. 2 is a transverse sectional view taken on line- 22 of Fig. 1;

Fig. 3 is an elevational view of the opposite side of the hoist with thecover removed;

Fig. 4 is a sectional plan view taken on line 4-4 of Fig. 3.

Our device comprises two body parts or plates I0 and I I spaced apart toaccommodate and sup port the various parts of our device. The plate H issomewhat smaller than the plate Ill, and is eccentrically arrangedtherewith in order that the weight of the hoist may be kept as low aspossible. These plates are held in spaced relation by means of aplurality ofstuds i2; i3 and i l. Each of the studs preferably has areduced portion 15 extending forwardly from the fulldiameter bodyportion I6, thereby providing a shoulder 2i]. At the forward end of thereduced portion I 5 there is also preferably a reduced portion 2!whereby a shoulder 22 is provided. The body plate I! is provided with aplurality of apertures 23 for the reception of the reduced portions i5of the studs. .The body plate In is likewise provided with registeringapertures 2 1 for the reception of the reduced portions 21- ofthe'studs. The body plates H) and H are en'- gaged with theirrespectiveshoulders 22 and 29 where they are securely welded in place byany suitable means. thereby form a rigid body for the hoist which doesnot depend upon screws, bolts or the like to permanently hold the partstogether in rigid manner. Obviously, instead of separate body plates andstuds, these parts may be made in the form of a single casting. v Thefull-size body portion 16 of each of the studs is provided with ascrewthreaded aperture atits outer end for the'reception of bolts 25whereby the bearing spider 26 may bel'secured in place. 'This bearingspider is provided with countersunk bosses 30 which register with thestuds l2, l3 and i4 and which are-engaged by the screws 25. This spideris also provided with suitable bearings for other parts of the hoist tobe hereinafter described.

Each of the body plates Ill and II is provided with a registeringaperture 3!! for the reception of the trunnion bearings 32 of a trunnionblock 33 to which the hoist hook 34 is attached.

The load wheel 35 of my device is preferably made an integral part ofthe load shaft 36. One

' end of the shaft is supported by a bearing ring 42 which passesthrough an aperture 4| formed.

in the body plate H where it is secured preferably by means of welding.The end of the shaft which is mounted in the bearing'ring 42 isprosuificiently large to permit the passage of the load wheel 35. Abearing ring bushing 50 is mounted within the aperture 45 and is formedwith a bearing for the support of the end 5| of The body plates and thestuds the load shaft. The bushing 50 is provided with a flange 51 forengagement with the outer face of the body plate II] to limit the axialmovement of the bushing, said flange having tabs 58 extending preferablyfrom four points, equidistant- 1y arranged, through which bolts 59 arepassed,

whereby the bushing is securely held in; place in detachable manner. Bythis construction-the body plates and studs may be initially assembledand welded, after which the load wheel and shaft may be passed axiallythrough the opening 46 andbushing 42. The bushing ring 50 may then beengaged with and secured within the opening 46, whereby the load wheelwill be detach'ably secured-within the body plates and ,may be easilyand; quickly replaced in case of wear or breakage without the necessityof disassembling the spaced body plates. As hereinbefore stated thisnovel construction makes it possible to provide a per manently securedand rigid body part for the hoist.

The operating shaft 52 passes through an opening 53 formed axially inthe load shaft 36 and has one end rotatably supported by a bearing 54formed in the end of the load shaft. The other end of the operatingshaft extends through the load shaft and is mounted in a suitablebearing 55 supported by a hub 55 formed in the bearing spider 26. Theoperating shaft is provided with a drive pinion which may be madeintegral with the shaft or secured thereto by any suitable means. Thispinion is arranged between the end 43 of the load shaft 36 and the innerface of the bearing spider 26. This pinion meshes with an intermediategear 6|. preferably formed integrally with an intermediate pinion 62both having a common shaft 63. The shaft is provided with bearing ends64 and 65, the end 64 being supported by the body plate II in a bushing66 mounted in an aperture I0 where it is secured preferably by means ofwelding. The end 85 is preferably mounted in antifriction hearing IIsupported in the boss 12 of the spider.

A chain guide, preferably in the form of a wheel I3, is rigidly mountedupon a shaft I4 having its ends supported or journaled in suitableapertures formed in the body plates [0 and II. Obviously, if desired,the wheel may be rotatably mounted upon a shaft which is removablysecured to the body plates or welded thereto as desired.

A bell-shaped cover 75 is provided for inclosing the reducing gears andthe spider. This cover preferably contacts the body plate I I where agasket 16 may be provided for sealing the edge.

The cover is preferably secured in place by means of screws 80 whichpass through the cover into screwthreaded apertures 8| formed in thespider. The usual stripper 82 is provided, and this is securedpreferably to the inner face of the body plate I0 by means of a bolt 83.

One end of the operating shaft 52 extends outwardly and has fixedthereon a screwthreaded member 84 which is provided with an integralflange 85,. The screwthreaded member and flange form part of a Westonbrake mechanism, com- This intermediate gearis mon and well known.Mounted upon the screwthreaded member 84 is the hand-chain wheel 06 ofour device around which passes the hand chain 90 in customary manner.This hand wheel is provided with an integral flanged hub 9| which facesthe flange 85 of the Weston brake and between which is. mounted theratchet wheel 92 of the brake. As is customary, a friction washer 93 isarranged between one side of the ratchet wheel and the flange 85, andanother washer, located at the opposite side of the wheel, is arrangedbetween it and the flanged hub 9|. The ratchet wheel is rotatablymounted upon the threaded member 84 and held against rotation in onedirection by means of a ratchet pawl 94. This ratchet pawl is rotatablymounted upon a stud 95 which passes into a suitable aperture 98 formedin the body plate I0, where it is secured in place preferably bywelding. A spring 91 is carried by a lug 98, secured to the outer faceof the body plate I0 by means of welding, the other end of the springbeing engaged with the ratchet pawl to press it into engagement with theteeth of the ratchet wheel. The chain guard I00 of our device comprisespreferably two members I0 I spaced apart by means of a spacer I02 andheld together centrally by means of a bolt I03. The ends of the membersIOI are disposed in and held by suitable brackets I04 carried by thebody plate I0.

As shown in the drawings the lower hook I05 of the hoist is carried byaswivelv block I00 which is attached to the load chain I01 which passesup around the load wheel in the usual manner and which has its free endcarried by an anchor stud I08 secured to the inner face of the bodyplate I0 preferably by welding. Screwthreaded means I09 are preferablyemployed to hold the end link of the chain upon the stud.

Having thus described our invention, what we claim is:

A hoist comprising two spaced body plates of substantially flatmaterial, a plurality of spacing studs welded permanently to saidplates, a load wheel disposed between said body plates and formedintegrally with a load shaft, said shaft having bearing portions, ananti-friction bearing for each shaft portion, each of said plates beingformed with an opening for the support of said anti-friction bearings,the opening in one of said plates being large enough to permit thepassage of said load wheel, the opening in the other plate being smallerthan the load wheel but larger than the load shaft, a bushingpermanently secured in the opening of the last mentioned plate to form abearing for the adjacent end of the load shaft, a bearing ring bushingfitted into the opening of the first mentioned plate, said bushinghaving a slip fit in the engaged opening and formed with a flange forengagement with the outside surface of the plate to stop inward axialmovement thereof, and readily removable means for securing said flangeto said plate.

. HUMPHREY F. PARKER.

KARL w. s'rmson'

